<?php

namespace app\common\library;

use fast\Random;
use think\Hook;

/**
 * 短信验证码类
 */
class Sms
{

    /**
     * 验证码有效时长
     * @var int
     */
    protected static $expire = 120;

    /**
     * 最大允许检测的次数
     * @var int
     */
    protected static $maxCheckNums = 10;

    /**
     * 获取最后一次手机发送的数据
     *
     * @param   int    $mobile 手机号
     * @param   string $event  事件
     * @return  Sms
     */
    public static function get($mobile, $event = 'default')
    {
        $sms = \app\common\model\Sms::
        where(['mobile' => $mobile, 'event' => $event])
            ->order('id', 'DESC')
            ->find();
        Hook::listen('sms_get', $sms, null, true);
        return $sms ? $sms : null;
    }

    /**
     * 发送验证码
     *
     * @param   int    $mobile 手机号
     * @param   int    $code   验证码,为空时将自动生成4位数字
     * @param   string $event  事件
     * @return  boolean
     */
    public static function send($mobile, $code = null, $event = 'default')
    {
        $code = is_null($code) ? Random::numeric(config('captcha.length')) : $code;
        $time = time();
        $ip = request()->ip();
        $sms = \app\common\model\Sms::create(['event' => $event, 'mobile' => $mobile, 'code' => $code, 'ip' => $ip, 'createtime' => $time]);
	    Hook::add( 'sms_send', function ( $params ) {
		    $sms_config = config( 'sms' );
		    $signature  = $sms_config['signature'];
		    $tKey       = time();
		    $password   = md5( md5( $sms_config['sms_pwd'] ) . $tKey );
		    $content    = $signature . "您的验证码是{$params->code}";
		    $date       = array(
			    'username'  => $sms_config['sms_user'], //用户名
			    'password'  => $password, //密码
			    'tKey'      => $tKey, //tKey
			    'signature' => $signature,
			    'mobile'    => $params->mobile,
			    'content'   => $signature . $content,
		    );

		    $result = self::httpPost( $sms_config['url'], $date );
		    return $result;
	    } );
        $result = Hook::listen('sms_send', $sms, null, true);
        if (!$result) {
            $sms->delete();
            return false;
        }
        return true;
    }

    /**
     * 发送通知
     *
     * @param   mixed  $mobile   手机号,多个以,分隔
     * @param   string $msg      消息内容
     * @param   string $template 消息模板
     * @return  boolean
     */
    public static function notice($mobile, $msg = '', $template = null)
    {
        $params = [
            'mobile'   => $mobile,
            'msg'      => $msg,
            'template' => $template
        ];
        $result = Hook::listen('sms_notice', $params, null, true);
        return $result ? true : false;
    }

    /**
     * 校验验证码
     *
     * @param   int    $mobile 手机号
     * @param   int    $code   验证码
     * @param   string $event  事件
     * @return  boolean
     */
    public static function check($mobile, $code, $event = 'default')
    {
        $time = time() - self::$expire;
        $sms = \app\common\model\Sms::where(['mobile' => $mobile, 'event' => $event])
            ->order('id', 'DESC')
            ->find();
        if ($sms) {
            if ($sms['createtime'] > $time && $sms['times'] <= self::$maxCheckNums) {
                $correct = $code == $sms['code'];
                if (!$correct) {
                    $sms->times = $sms->times + 1;
                    $sms->save();
                    return false;
                } else {
	                Hook::add( 'sms_check', function () {
		                return true;
	                } );
                    $result = Hook::listen('sms_check', $sms, null, true);
                    return $result;
                }
            } else {
                // 过期则清空该手机验证码
                self::flush($mobile, $event);
                return false;
            }
        } else {
            return false;
        }
    }

    /**
     * 清空指定手机号验证码
     *
     * @param   int    $mobile 手机号
     * @param   string $event  事件
     * @return  boolean
     */
    public static function flush($mobile, $event = 'default')
    {
        \app\common\model\Sms::
        where(['mobile' => $mobile, 'event' => $event])
            ->delete();
        Hook::listen('sms_flush');
        return true;
    }

	private static function httpPost( $url, $date ) { // 模拟提交数据函数
		$curl = curl_init(); // 启动一个CURL会话
		curl_setopt( $curl, CURLOPT_URL, $url ); // 要访问的地址
		curl_setopt( $curl, CURLOPT_SSL_VERIFYPEER, false ); // 对认证证书来源的检查
		curl_setopt( $curl, CURLOPT_SSL_VERIFYHOST, false ); // 从证书中检查SSL加密算法是否存在
		curl_setopt( $curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT'] ); // 模拟用户使用的浏览器
		curl_setopt( $curl, CURLOPT_POST, true ); // 发送一个常规的Post请求
		curl_setopt( $curl, CURLOPT_POSTFIELDS, json_encode( $date ) ); // Post提交的数据包
		curl_setopt( $curl, CURLOPT_TIMEOUT, 30 ); // 设置超时限制防止死循环
		curl_setopt( $curl, CURLOPT_HEADER, false ); // 显示返回的Header区域内容
		curl_setopt( $curl, CURLOPT_RETURNTRANSFER, true ); // 获取的信息以文件流的形式返回
		curl_setopt( $curl, CURLOPT_HEADER, false ); //开启header
		curl_setopt( $curl, CURLOPT_HTTPHEADER, array(
			'Content-Type: application/json; charset=utf-8'
		) ); //类型为json
		$result = curl_exec( $curl ); // 执行操作
		if ( curl_errno( $curl ) ) {
			echo 'Error POST' . curl_error( $curl );
		}
		curl_close( $curl ); // 关键CURL会话
		return json_decode( $result, true ); // 返回数据
	}

}
